SeriesFBCN
Normalized horizontal centrifugal pumps for industrial applications with clean or turbid liquids. Mechanically compliant with ASME B73.1.
The FBCN Series is FB Bombas' normalized horizontal centrifugal pump line per ASME B73.1 (mechanical) — 43 standard models covering flow rates up to 2,200 m³/h, head up to 135 m, temperatures up to 260°C and rotation up to 3,500 rpm. Back pull-out construction allows removal of the rotating assembly without disconnecting piping, dramatically reducing maintenance time. Available materials: cast iron, A216 WCB carbon steel and A743 CF8M stainless steel. Applications: chemical, petrochemical, pulp and paper, steelmaking, mining, food, textile, pharmaceutical and water treatment (WTP/WWTP).
Discover the FBCN Series: Standardized Centrifugal Pump
High-performance Industrial Water Pump per ASME B73.1
The FBCN Series is FB Bombas' normalized horizontal centrifugal pump line, designed for industrial applications with clean or turbid liquids. With mechanical construction per ASME B73.1, the FBCN offers broad interchangeability with pumps from other manufacturers. The Back Pull-Out design allows complete removal of the rotating assembly without disconnecting piping — drastically reducing field maintenance time.
ASME B73.1 (mechanical) — normalized horizontal construction and interchangeability
Back Pull-Out design: maintenance without disconnecting piping
43+ size combinations — DN25 to DN300, up to 2,200 m³/h and 135 m
Up to 260°C — cast iron, carbon steel or stainless steel
Motor-Pump Set
Fire Version
Product Gallery
View the FBCN pump from different angles
Front View
Aligned suction and discharge connections for simplified installation. Volute sized for maximum hydraulic efficiency.
Side View
Back Pull-Out design allows rotor and seal maintenance without disconnecting piping. Direct coupling to electric motor.
Rear View
Robust welded structural steel base with standardized mounting feet. Factory-guaranteed precise alignment.
General Description
Standardized construction per international standards
Volute Casing
Spiral-shaped casing, cast as a single piece and supported on its own feet. Suction-side wear ring.
Back Pull-Out
The bearing assembly can be removed from the volute without disconnecting piping. Easy assembly, disassembly and maintenance.
Single Stage
Radial-type impeller, single suction, with pressure-side wear ring. Horizontal installation.
ASME B73.1
Mechanical construction per ASME B73.1 — normalized horizontal design and interchangeability.
Operating Data
Per technical manual MTEC-03/00
Sizes
DN25 - DN300
Max Flow
2.200 m³/h
Max Head
135 m
Max Temperature
260°C
Max Speed
3.500 rpm
Suction Pressure
10 bar
Rotation Direction
Clockwise (drive side)
Corrosion Allowance
3,3 mm
Main Components
Construction details per technical manual
Casing (Body)
Spiral-shaped casing, cast as a single piece and supported on its own feet. Features a suction-side wear ring.
Impeller
Radial type, single suction, with pressure-side wear ring. Except models 25-150, 32-125 and 32-125.1.
Shaft
Assembled with protective sleeve in the sealing area. Packing or mechanical seal for sealing. For fluids with solids, consult FB.
Available Models
43 standardized models — select by discharge diameter
Discharge DN25
2 models
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Discharge DN32
8 models
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Discharge DN40
5 models
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Discharge DN50
5 models
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Discharge DN65
5 models
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Discharge DN80
5 models
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Discharge DN100
5 models
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Discharge DN125
4 models
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Discharge DN150
4 models
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Fire Fighting Pumps
Complete sets for fire protection systems
FB Bombas manufactures motor-pump sets for fire fighting systems, complying with NFPA 20, ABNT NBR 10897 and NBR 13714 standards. We supply individual pumps with electric or diesel motor to complete systems with control panel, valves and accessories — ready for installation.
Individual Pumps
FBCN motor-pump set with electric motor, yellow coupling guard and structural steel base — side view
Complete Systems
Diesel motor-pump set with protective enclosure, control panel and accessories
Completed Projects
Diesel motor-pump set on mobile cart, ready for field operation
Assembled Sets
Pumping systems ready for installation
FB Bombas supplies complete motor-pump sets: welded structural steel baseplate, flexible coupling with or without spacer, coupling guard and electric motor — all factory-aligned and tested. We customize baseplate, guard and automation per client specification.
Standard Set
FBCN pump with WEG electric motor, flexible coupling and guard on welded structural steel baseplate.
Pump Casing
Normalized spiral volute casing per DIN 24255. Axial suction and radial discharge with standardized flanges.
Sealing Chamber
Configurations per application type
ST - Standard
Lubrication by pumped fluid / internal sealing. For clean, non-aggressive fluids. Up to 160°C.
160°CS1 - External Source
Sealing by external clean liquid. For toxic, aggressive, foul-smelling fluids or vacuum suction. Up to 105°C.
105°CS2 - External Lubric.
External lubrication and sealing. For fluids with solid particles or fibers in suspension. Up to 105°C.
105°CS3 - Flushing
Flushing with external clean liquid. For fluids with abrasives or crystallization risk. Up to 105°C.
105°CS4 - Thermal Oil
Pure graphite and/or graphite with carbon fiber packing. No connections. Above 260°C.
>260°CS - Mechanical Seals
Per application requirements and manufacturer consultation.
(*) External source applications cannot use a cooling chamber.
Pressure x Temperature
Limits per sealing type and flange class
| Sealing | Temperature | ANSI B16.1 125 Lb (bar) | ANSI B16.1 250 Lb (bar) |
|---|---|---|---|
| Packing | -28 a 65°C | 12 | 16 |
| Packing | 93°C | 11 | 16 |
| Packing | 105°C | 10 | — |
| Mech. Seal | 90°C | 10 | 10 |
Materials & Peripheral Speed
Speed limit per rotor material
Cast Iron
up to 40 m/s
Carbon Steel
up to 60 m/s
Stainless Steel
up to 80 m/s
Flange Types
Standards per ANSI and ASME B73.1
ANSI B16.1 125 Lb FF
Cast iron - flat face
ANSI B16.1 250 Lb FF
Steel - flat face
ANSI B16.5 150 Lb RF
Steel - raised face
ANSI B16.42 150 Lb
Per ASME B73.1
Auxiliary Connections
All connections in NPT thread
| Connection | Description |
|---|---|
| D1 | Pump Drain |
| D2 | Support Drain |
| D3 | Support Drip |
| D4 | Base Drain |
| L1 | Lubrication (Ø20mm) |
| M1 | Pressure Gauge |
| M2 | Vacuum Gauge |
| Re/Rs | Cooling (Inlet/Outlet) |
| Se/Ss | Sealing (Inlet/Outlet) |
| R | Fluid recirculation |
Accessories
Complementary components for installation
Drive
Electric motor or combustion engine.
Coupling
Flexible with or without FB standard spacer or other manufacturers.
Guard
FB standard carbon steel or anti-spark material guard.
Baseplate
Welded structural steel baseplate.
Power Reserve
Recommended margin for motor sizing
| Required Power (HP) | Power Reserve - Motor |
|---|---|
| up to 2 | ~20% (minimum 1.5HP) |
| up to 20 | ~15% |
| above 20 | ~10% |
Efficiency Reduction
For stainless steel impeller
| Impeller Passage Width | Efficiency Reduction |
|---|---|
| up to 12mm | 3 points |
| 12 to 15mm | 2 points |
| above 15mm | No reduction |
Industrial Sectors
Solutions for clean or turbid liquids in various segments
Petrochemical
Chemical
Paper & Pulp
Steel Industry
Mining
Food Industry
Pharmaceutical
Sanitation
Fire Fighting
textile, sugar and other sectors...
Model Nomenclature
Understand the FBCN pump technical designation
FB Bombas brand
Standardized Centrifugal
Discharge flange diameter (mm)
Rotor nominal diameter (mm)
Need help specifying?
Our engineering team is ready to size the ideal FBCN pump for your application. Over 43 size combinations available.